Electronics Forum | Tue Jan 31 13:41:41 EST 2017 | tombstonesmt
Dow Corning 3-1953 is widely used when it comes to silicone based conformal coatings. Low odor, medium viscosity, can be atomized or needle dispensed. We have our operators fill syringe cartridges for any minor touch up.
Electronics Forum | Wed Nov 02 13:49:11 EDT 2016 | defakto227
I'm looking for a UL alternative to Araldite 2040 for components staking on PCBs. Ideally, viscosity around 50k cp, room temperature or UV cure, and hardness above shore D 35. Any suggestions? *edit* It's been a very long process with minimal res
Electronics Forum | Fri Feb 03 07:06:22 EST 2017 | emeto
It makes sense. With temperature viscosity will change, and more liquidus material will flow better.
Electronics Forum | Sun May 27 11:12:02 EDT 2001 | davef
Listen, you can figure this-out from your particular situation. Do this: 1 Talk to your operators and determine if they see viscosity changes in your materials. 2 Talk to the people doing viscosity measurements and determine if they see viscosity
Electronics Forum | Wed Feb 10 08:10:26 EST 2010 | davef
Here is a posting by P Kinner at Humiseal ... Typically, there are three main approaches to avoid coating wicking into press-fit connectors (and other keep out areas). Wicking is a phenomenon caused by a combination of low viscosity of conformal coa
Electronics Forum | Tue Nov 01 10:06:00 EDT 2011 | davef
Humiseal says: Typically, there are three main approaches to avoid coating wicking into press-fit connectors (and other keep out areas). Wicking is a phenomenon caused by a combination of low viscosity of conformal coating material and strong capilla
Electronics Forum | Wed Feb 25 11:37:01 EST 2015 | jasonnova
We have a customer with an assembly that will require potting using 3M DP-270. There is a component that needs to be covered with potting material but it is considerably higher than the overall potting height of the cavity. The low viscosity of the
Electronics Forum | Tue May 15 14:23:20 EDT 2001 | medernach
Again, I'm not familiar with your material but SMT Adhesives as a collective group are typically hydroscopic. An increase in humidity in your facility will lower the viscosity of certain materials. I don't want to say who's material I've had bad ex
Electronics Forum | Tue May 15 12:56:51 EDT 2001 | Scott B
We had a similar problem a while back and found it to be an operator messing with the air pressure valve (of course no-one admitted to doing it). When cranked up enough, there was enough back pressure in the syringe to increase the volume of material
Electronics Forum | Fri Jun 12 13:28:23 EDT 2009 | dontfeedphils
Asymtek in-line machine with the Jet head hands-down. And since you will be coating silicone you should virtually have no touch-up after it exits the machine because of the higher viscosity of this material.
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